package com.heima.app.gateway.filter;

import com.heima.app.gateway.utils.AppJwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
@Slf4j
public class AuthorizeFilter implements Ordered, GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //1.获取request和response
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        //2.判断请求路径中是否包含login\
        String path = request.getURI().getPath();
        log.info("-路径为---->{}",path);
        if (path.contains("/login")){
            //如果包含 放行
            return chain.filter(exchange);
        }
        /*//3.效验jwt 是否包含taken
        String token = request.getHeaders().getFirst("token");

        log.info("------>{}",token);
        //3.1 判断taken是否存在
        if (StringUtils.isBlank(token)){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);//没有权限
            return response.setComplete();//结束访问
        }
        //3.2 判断taken是否在有效期
        Claims claimsBody = AppJwtUtil.getClaimsBody(token);
        int result = AppJwtUtil.verifyToken(claimsBody);
        if (result == 1 || result == 2){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);//没有权限
            return response.setComplete();//结束访问
        }*/
        //4.放行
        return chain.filter(exchange);
    }

    /**
     * 优先级设置 值越小 优先级越高
     * @return
     */
    @Override
    public int getOrder() {
        return 0;
    }
}
